Distinctive space weathering on Vesta from regolith mixing processes

C. M. Pieters (), E. Ammannito, D. T. Blewett, B. W. Denevi, M. C. De Sanctis, M. J. Gaffey, L. Le Corre, J.-Y. Li, S. Marchi, T. B. McCord, L. A. McFadden, D. W. Mittlefehldt, A. Nathues, E. Palmer, V. Reddy, C. A. Raymond and C. T. Russell
Additional contact information
C. M. Pieters: Brown University
E. Ammannito: Istituto di Astrofisica e Planetologia Spaziali, INAF, ARTOV, 00133 Rome, Italy
D. T. Blewett: Johns Hopkins University Applied Physics Laboratory
B. W. Denevi: Johns Hopkins University Applied Physics Laboratory
M. C. De Sanctis: Istituto di Astrofisica e Planetologia Spaziali, INAF, ARTOV, 00133 Rome, Italy
M. J. Gaffey: University of North Dakota
L. Le Corre: Max-Planck Institute for Solar System Research
J.-Y. Li: University of Maryland, College Park
S. Marchi: NASA Lunar Science Institute
T. B. McCord: Bear Fight Institute, 22 Fiddler’s Road, Box 667, Winthrop, Washington 98862, USA
L. A. McFadden: NASA Goddard Space Flight Center
D. W. Mittlefehldt: NASA Johnson Space Center
A. Nathues: Max-Planck Institute for Solar System Research
E. Palmer: Planetary Science Institute, 1700 East Fort Lowell Road, Suite 106, Tucson, Arizona 85719, USA
V. Reddy: Max-Planck Institute for Solar System Research
C. A. Raymond: Jet Propulsion Laboratory, Caltech
C. T. Russell: University of California

Nature, 2012, vol. 491, issue 7422, 79-82

Abstract: Whereas space weathering of some airless bodies, such as the Moon, occurs through the accumulation on regolith of nanophase metallic particles, spectroscopic data show that space weathering of the asteroid Vesta occurs through the small-scale mixing of diverse surface components, which gradually generates locally homogenized upper regolith.

Date: 2012
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DOI: 10.1038/nature11534

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